Warp goods



Dec. 12, 1939. P. SCHONF ELD WARP GOODS Filed Oct. 2, 1937 o. I r H UZIQ/ v J PAUL SCHONFELD Patented Dec. 12, 1939 2,183,3itl8 WARP GOUDS PaulSchiinfeld, Ghats, Germany Application October 2, 1937, Serial No; meetsin Germany .luly 16, 193'? This invention relates to two-machine plainwarp goods with worked in rubber threads.

Various kinds of plain warp goods comprising two thread systems betweenwhich rubber warp 5 threads are loosely worked in are known, but aserious drawback of such goods is that the rubber threads which, so tospeak, float through the fabric tend to run back. As such warp goodsare.

chiefly used for cutting pieces rout of them that are then sewn togetherto form all kinds of wearing apparel and that have therefore no firmedges. this drawback is exceedingly troublesome. Attempts to fix therubber threads in position by special arrangement or the two threadsystems and mutual binding of the threads have not given satisfactoryresults hitherto.

According to the invention, the drawback mentioned can be eliminated byrepeatedly tying up the rubber threads in the goods so as to iorm loops.

In this way, the rubber threads can run back only in the space betweentwo loops formed by themselves and are thus practically prevented fromrunning back at all. Pieces can be cut out of such goods without anyunpleasant conse= quences.

- By way of example, some forms of the invention are illustrated in theaccompanying drawing in which Figure 1 shows a lapping diagram to bringout the composition of the goods, while Figure 2 is a diagram showingseveral groups of rubber threads. v

In Figure l, the warp goods consist of two thread systems 7 and 8, thethread system l1 repre- 35 senting ordinary ground fabric, such assimple half tricot. The thread system 8 of which only one thread isshown for clearness sake is worked with overlaying and underlayingoperations to form transverse ribs in the ground fabric of the 40 threadsystem i. For this purpose, the threads of the group 8 duringunderlaying operations are alternately racked once in the same directionas the threads of groups i and then again in a direc tion opposite tothem. The numerals I to 6 indi- 45 cate the courses in which therackingof the thread group 8 is repeated. The rubber warp threads 9 floatbetween the two thread groups l, 8 through the goods, but according tothe invention are tied up at recurring points It, i. e. in all sixcourses 4 shown, by forming meshes in the goods, i. e. the

rubber threads are formed into knitted loops by being fed to the needlesat intervals. This is done simply by once overlaying the threads 9 atthe points concerned during working of the goods.

The thread groups I, 8 may be lapped differently than shown. the rubberthreads 9 form loops and how many of these threads are used for thegoods.

To produce goods according to the invention the threads of the group I!are drawn into the lower lapping machine and the threads of the group 8it?) into the upper machine. The rubber threads Si are gathered in amachine arranged between two other machines. The thread system 8produces transverse ribs in a manner described in detail in myco-pending patent application serial No. 159,- id

399, now Patent No. 2,130,655.

It is further possible to gather the rubber threads 9 subdivided intogroups a and 9 (Figure 2) into two or more lapping machines. In

case of two lapping machines the even numbered rubber threads are guidedin one machine and the odd numbered ones in the other. In this way thearrangement may be such that the mesh-forming points of the rubberthreads of one group are staggered in the longitudinal direction of thegoods relative to the mesh-forming points of the rubber threads of theother group. Then the rubber threads are tied up not in all six courses,as in Figure l, but in all two times six courses.

The upper lapping machine is the one which is directed toward theneedles when the machines are situated upon that side of the needlesfrom which the goods are removed.

I claim:

1. A plain warp knit fabric having two inelastic thread groups andrubber warp threads between the two inelastic thread groups, and beingformed into knitted loops in spaced courses only, the upper thread groupbeing worked in without forming knitted loops in those courses in whichthe 40 rubber warp threads form knitted loops.

2. Warp knit fabric according to claim 1, wherein said upper threadgroup is shifted sidewise only in those courses in which the rubber warpthreads do not form knitted loops.

3. Warp knit fabric according to claim 1, wherein the rubber warpthreads consist of at least two groups which are knitted in the'fabricat points staggered in the longitudinal direction in relation to eachother.

- PAUL SCHdNFEL-D.

It is immaterial at which distances d

